Jeju vs Busan

Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Busan edges ahead as the better destination in October. Busan offers 9 hours of daily sunshine with only 5 rain days, while Jeju sees 9 sunshine hours and 7 rain days.

Jeju sits in the comfortable travel range at 20°C. Busan is also comfortable at 20°C.

For travelers who prioritize dry weather, Busan is the stronger choice in October.

Jeju reaches an average high of 20°C (68°F) and drops to 17°C (63°F) at night during October. The daily temperature range is 3°C, meaning relatively stable temperatures from day to night.

Busan averages 20°C (68°F) for the high and 14°C (57°F) for the low, with a daily range of 6°C. The two cities feel quite similar in terms of temperature.

Both cities are in the Northern Hemisphere, so they share the same seasonal pattern in October.

Jeju receives approximately 92 mm of rainfall across 7 rain days during October. Rain is occasional, so a light rain jacket should suffice.

Busan sees 70 mm over 5 rain days. That makes Busan the drier option by 2 rain days and 22 mm of total precipitation.

Humidity also differs: Jeju averages 70% while Busan sits at 65%. Jeju will feel muggier, especially at higher temperatures.